James M. Edmunds began his career as a school teacher and inspector of schools in Ypsilanti, Michigan, before transitioning to the mercantile sector. He held various local positions, including serving in the Michigan Senate and House of Representatives. Edmunds later moved to Detroit, where he engaged in the lumber business and held significant roles within the Republican Party. His public service extended to federal positions, including serving as postmaster of Washington, D.C. and commissioner of the United States General Land Office.

James M. Edmunds's political career reveals a unique blend of regional economic advocacy and federal civil service, marked by an ideological shift from Whig to Republican. His support for lumber business interests and treaty renegotiations with Confederate Indian tribes indicates a strategic alignment with economic pragmatism and regional development. Edmunds's educational background and local positions suggest a deep commitment to public service, yet his later federal appointments and national advocacy roles hint at a broader, more calculated approach to policy and governance.